Sorption of Benzene, Toluene, and Ethylbenzene at Low Concentrations by Plasticized Poly(ethyl methacrylate) and Polystyrene Polymers Using a Quartz Crystal Microbalance at 298.15 K

2021 ◽  
Author(s):  
Abhijeet R. Iyer ◽  
Veselinka B. Mitevska ◽  
Jonathan J. Samuelson ◽  
Scott W. Campbell ◽  
Venkat R. Bhethanabotla
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Ethyl Methacrylate ◽  
Low Concentrations ◽  
Benzene Toluene

Efficient detection of volatile aromatic hydrocarbon using linseed oil–styrene–divinylbenzene copolymer coated quartz crystal microbalance

RSC Advances ◽  
2015 ◽  
Vol 5 (73) ◽  
pp. 59533-59540 ◽  
Author(s):  
Rashmita Das ◽  
Rajib Bandyopadhyay ◽  
Panchanan Pramanik
Keyword(s):  
Aromatic Hydrocarbon ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Linseed Oil ◽  
Ethyl Benzene ◽  
Optimum Ratio ◽  
Efficient Detection ◽  
Divinyl Benzene ◽  
Styrene Divinylbenzene ◽  
Benzene Toluene

A polymer film with high sensing ability QCM for benzene, toluene, o-xylene and ethyl benzene vapors has been produced from the co-polymerization of styrene, divinyl benzene and linseed oil with an optimum ratio at 120 °C.

scholarly journals Quartz Crystal Microbalance Detection of Aflatoxin B1 by Self-Assembled Monolayer Technique

2019 ◽  
Vol 13 (1) ◽  
pp. 122-128
Author(s):  
Raya Raykova ◽  
Dessislava A. Marinkova ◽  
Vera A. Semerdzhieva ◽  
Magalie Michiel ◽  
Pascal Griesmar ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Aflatoxin B1 ◽  
Quartz Crystal ◽  
Indirect Elisa ◽  
Gold Surface ◽  
Self Assembled Monolayer ◽  
Toxic Pollutants ◽  
Low Concentrations ◽  
Self Assembled ◽  
Antigen Antibody

Background: New biosensor techniques allowing detection of low concentrated substances show a great variety nowadays. The construction of a system with modified quartz as a part of a Quartz Crystal Microbalance (QCM) techniques helps the detection and confirmation of low toxin concentrations in a sample. Objective: The study aims to allow the application of methods for preparation and modification of the gold surface of piezoelectric crystal for detection of aflatoxin B1(AFB1) in the concentration range 0.2 - 2.0 µg/L by QCM technique (quartz - crystal microbalance). Methods: The procedure for the preparation of quartz crystal sensors for experimental purposes was performed. The quartz surface was activated and covered with self-assembled monolayer to immobilize antibody (rabbit anti-aflatoxin B1) for the detection of antigen - antibody reaction. Results: The G” corresponds to viscous properties of the material, during applied deformation of the material in the presence of different concentrations, which revealed in the sensitivity of the used resonator. Conclusion: Detection of toxic pollutants may be achieved via QCM methods, ultrasound resonator and piezoelectric quartz techniques for measurement. These techniques allow detection of significantly low concentrations of toxic pollutants, in particular, AFB1, compared to analysis with direct and indirect ELISA immunoassays.

scholarly journals Polyvinyl Acetate Film-Based Quartz Crystal Microbalance for the Detection of Benzene, Toluene, and Xylene Vapors in Air

Chemosensors ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 20 ◽  
Author(s):  
Rianjanu ◽  
Hasanah ◽  
Nugroho ◽  
Kusumaatmaja ◽  
Roto ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Polyvinyl Acetate ◽  
Effective Interaction ◽  
High Sensitivity ◽  
Chip Surface ◽  
Force Microscopy ◽  
Atomic Force ◽  
Active Coating ◽  
Benzene Toluene

Vapors of volatile organic compounds such as benzene, toluene, and xylene (BTX) may cause health concerns. The sensitive detection of these compounds in air remains challenging. In this study, we reported on modification of the Quartz Crystal Microbalance (QCM) sensing chip using polyvinyl acetate (PVAc) film as active coating for the analysis of BTX vapors. The PVAc film was deposited on the QCM sensing chip surface by a spin coating technique. The morphology of the PVAc films was confirmed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The sensitivities of PVAc based QCM system for benzene, toluene, and xylene analyses were 0.018, 0.041, and 0.081 Hz/ppm, respectively. The high sensitivity of the proposed QCM system for analysis of BTX vapors is believed to be due to the effective interaction between the PVAc film and BTX molecules. The analyte vapor pressure appears to also affect the sensitivity. These data show that the prepared QCM sensor has a low time constant, good reproducibility, and excellent stability. It offers an alternative to the developed methods for detection of BTX and possibly other aromatic hydrocarbons in the air.

Interaction of Clear Flavor Emulsions Containing Lemon Essential Oils with Lipid Bilayers via a Quartz Crystal Microbalance

2019 ◽  
Vol 25 (6) ◽  
pp. 879-884
Author(s):  
Takahiro Sakai ◽  
Hayato Seki ◽  
Shogo Yoshida ◽  
Hayato Hori ◽  
Hisashi Suzuki ◽  
...  
Keyword(s):  
Essential Oils ◽  
Lipid Bilayers ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal
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